1 | /* |
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2 | * COPYRIGHT (c) 1989-2013. |
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3 | * On-Line Applications Research Corporation (OAR). |
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4 | * COPYRIGHT (c) 2013. |
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5 | * |
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6 | * The license and distribution terms for this file may be |
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7 | * found in the file LICENSE in this distribution or at |
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8 | * http://www.rtems.org/license/LICENSE. |
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9 | */ |
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10 | |
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11 | #ifdef HAVE_CONFIG_H |
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12 | #include "config.h" |
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13 | #endif |
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14 | |
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15 | #include <timesys.h> |
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16 | #include <pthread.h> |
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17 | #include <sched.h> |
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18 | #include <rtems/btimer.h> |
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19 | #include "test_support.h" |
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20 | |
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21 | const char rtems_test_name[] = "PSXTMTHREAD 05"; |
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22 | |
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23 | /* forward declarations to avoid warnings */ |
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24 | void *POSIX_Init(void *argument); |
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25 | void benchmark_pthread_create(void); |
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26 | void benchmark_pthread_setschedparam(void); |
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27 | void *test_thread(void *argument); |
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28 | |
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29 | void benchmark_pthread_setschedparam(void) |
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30 | { |
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31 | int status; |
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32 | int policy; |
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33 | struct sched_param param; |
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34 | pthread_t thread_ID; |
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35 | |
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36 | status = pthread_create(&thread_ID, NULL, test_thread, NULL); |
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37 | rtems_test_assert( status == 0 ); |
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38 | |
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39 | /* make test_thread equal to POSIX_Init() */ |
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40 | pthread_getschedparam(pthread_self(), &policy, ¶m); |
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41 | |
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42 | pthread_setschedparam(thread_ID, policy, ¶m); |
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43 | /* At this point, we've switched to test_thread */ |
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44 | |
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45 | /* Back from test_thread, switch to test_thread again */ |
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46 | param.sched_priority = sched_get_priority_min(policy); |
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47 | |
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48 | benchmark_timer_initialize(); |
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49 | //lower own priority to minimun, scheduler forces an involuntary context switch |
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50 | pthread_setschedparam(pthread_self(), policy, ¶m); |
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51 | } |
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52 | |
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53 | void *test_thread( |
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54 | void *argument |
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55 | ) |
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56 | { |
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57 | uint32_t end_time; |
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58 | |
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59 | sched_yield(); |
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60 | |
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61 | end_time = benchmark_timer_read(); |
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62 | put_time( |
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63 | "pthread_setschedparam: lower own priority preempt", |
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64 | end_time, |
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65 | 1, /* Only executed once */ |
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66 | 0, |
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67 | 0 |
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68 | ); |
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69 | |
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70 | TEST_END(); |
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71 | rtems_test_exit(0); |
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72 | //Empty thread used in pthread_create(). |
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73 | return NULL; |
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74 | } |
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75 | |
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76 | void *POSIX_Init( |
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77 | void *argument |
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78 | ) |
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79 | { |
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80 | |
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81 | TEST_BEGIN(); |
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82 | benchmark_pthread_setschedparam(); |
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83 | |
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84 | rtems_test_assert( 1 ); |
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85 | return NULL; |
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86 | } |
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87 | |
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88 | /* configuration information */ |
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89 | |
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90 | #define CONFIGURE_APPLICATION_NEEDS_CONSOLE_DRIVER |
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91 | #define CONFIGURE_APPLICATION_NEEDS_TIMER_DRIVER |
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92 | |
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93 | #define CONFIGURE_MAXIMUM_POSIX_THREADS 2 |
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94 | #define CONFIGURE_POSIX_INIT_THREAD_TABLE |
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95 | |
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96 | #define CONFIGURE_INIT |
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97 | |
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98 | #include <rtems/confdefs.h> |
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99 | /* end of file */ |
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